He was president of the Jewish Agricultural and Industrial Aid Society.

Leopold had a brother Abraham Sulzberger (1810-1880) and they both migrated from Heidelsheim, Bruchsal, Grand Duchy of Baden to Philadelphia.

[2] Sulzberger attended the First Zionist Congress in Basel, Switzerland in 1895 as one of five American delegates.

[4] Later that year, in November, he attended a debate held by the New York Judeans.

Sulzberger spoke as an anti-Zionist, questioning what kind of government could be run by people from Russia, Bulgaria and similar countries.